Middlesex County and Acton Town property record for 521 Main St, Acton, MA 01720 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 2.5 Baths |
| Year Built | Built 1992 |
| Square Footage | 1,920 sqft Living Area |
| Lot Size | 36,450 sqft (0.837 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $177,000 (1992) |
| Tax Bill | $14,101.00 (2025) |
Source: Middlesex County and Acton Town records · APN ACTO M:00E4 B:0085 L:0000
Assessment roll updated April 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 521 MAIN ST, ACTON, MA 01720-3934 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Apr 22, 1992 · Amount on Record |
| Deed Sale | Apr 22, 1992 · Amount on Record |
| Record Refreshed | Sep 20, 2026 |
Source: Middlesex County and Acton Town records · Assessment roll updated April 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Middlesex County |
| County Subdivision | Acton Town |
| Unified School District | Acton-Boxborough Regional School District (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $14,101.00 (+7.36%) | $822,200 (+4.35%) Land $284,300 Building $537,900 | $794,865 |
| 2024 | $13,134.00 (-1.57%) | $787,900 (+3.68%) Land $284,300 Building $503,600 | |
| 2023 | $13,344.00 | $759,900 Land $258,400 Building $501,500 |
Source: FEMA National Flood Hazard Layer, Middlesex County (25017C), updated September 10, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified: October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Low above 20% of the US · above 58% of Massachusetts |
|---|---|
| Wildfire Likelihood | About 1 in 10,000 per year |
| Exposure | Direct burnable vegetation at the parcel |
Values are read at the parcel center point; lenders make the official flood determination.
Source: NPS National Register of Historic Places · August 1, 2026 release · Last verified: October 2026
| Listed Area | Within Davis, Isaac, Trail listed 1972 · 1 contributing resources · NRIS 72001347 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
| Primary APN | ACTO M:00E4 B:0085 L:0000 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 7 Rooms |
| Building Area | 1,920 sqft Living Area |
| Gross Area | 4,152 sqft Gross Area |
| Stories | 2 Stories |
| Year Built | Built 1992 |
|---|---|
| Effective Year Built | Effective 1992 |
| Architectural Style | Colonial Style |
| Exterior Material | Wood Siding Exterior |
| Roof Construction | Gable Roof Construction |
| Roof Material | Asphalt Roof |
| Lot Area | 36,450 sqft (0.837 acres) |
| Cooling System | HVAC Cooling |
|---|---|
| Heating System | Forced Air with Air Conditioning Heating |
| Heating Fuel | Oil Heating Fuel |
| Street Address | 521 MAIN ST |
|---|---|
| City | ACTON |
| State | MA |
| Zip | 01720-3934 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Block | 85 |
| Jurisdiction | ACTON MA |
| Minor Civil Division | ACTON |
| Census Blockgroup | 2 |
| Census Block | 2005 |
| Census Tract | 363104 |
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